On the structure block you cannot place blocks requiring support block

Summary:
Blocks requiring the supported block (redstone, buttons, pressure plates, doors, etc.) cannot be placed on a structure block. All blocks that can be placed on the command block should be placed on the structure block.

Steps to reproduce:

1. Place structure block.

2. Try to place on the structure block such blocks as the door, button, redstone, etc..

Observed results:
On the structure block, you cannot place blocks requiring support.

Expected results:
On the structure block, you can place blocks requiring support (as on a command block).

Video: